Antifriction bearing



l ctQl, 1929. l s. B. HAsELTlNE 1,730,205

l ANTIFRICTION BEARING Filed March 17, 1924 I l y A l,l v

Patented Got. l, 1929 s'mrs UNIT STACY B. I-IASELI'INE, OF CHICAGO,ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMEN'QS, T0 W. I-I. MINER, INC., ACORPORATION OF DELAWARE ANTIFRICTION BEARING Application led March 17,1924. Seal No. 699,679.

This invention relates to improvements in antifriction bearings.

One object of this invention is to provide an anti-friction bearing ofthe roller type especially adapted for use as a railway car sidebearing.

More specifically, an object of the invention is to provide effectiveand efficient means for automatically returning the roller element tonormal central position after each actuation thereof without theemployment of springs or other relatively fragile devices likely tobreak or get out of order.

In the drawing forming a part of this specilication, Figure 1 is avertical sectional view taken through portions of body and truckloolsters of a railway car, showing my improvel ments applied thereto.And Figure 2 is avertical sectional view taken substantially on the line2-2 of Figure 1.

In said drawing, 10 denotes the under side of the body bolster and 11the upper side of the truck bolster of a railway car. As shown, myimproved side bearing is applied to the truck bolster and the sameconsists, broadly, of a retaining member or housing A; an antifrictionelement B; and a pair of pendulums or counter weights C.

The housing A is shown as comprising end walls 12 and side walls 13, thelatter having elongated, vertically extending openings 14 upwardly fromthe bottom. edge thereof. The housing is also provided with feet or lugs2O so that the same may be attached to the bolster 11 by rivets or thelike. A bearing plate 15, having a hardened wear plate 16 thereon, issecured in place at the bottom of the housing, preferably by peeningover portions of the housing member as shown in Figure 1.

The anti-friction element B in the present instance is of thecylindrical roller type, and has axially extending trunnions 17 at itsends. The anti-friction element is adapted to be inserted within theretaining member or housing and to roll back and forth in the bottomthereof, on the wear plate 16.

Counterweights or pendulum members C are arranged one at each end of theanti-friction element, each counterwveight having a main body portion 18of heavy plate in the shape of a sector, there being an aperture arlranged through the counterweight adjacent the top so as to receive thetrunnion 17 rotatably therein, the bottom of the counterweight havin@ alug or arm 19 extending laterally 55 thereftiom substantially centrallybetween the ends, each lug being adaptedto slidably engage in the v adjacent, vertically extending slot 14 in the housing. The lower ends ofthe lpendulum members or counterweights are prefe0 erably extended belowthe bottom of the roll` er and the wear'plate 1,6, v

The parts are assembled as follows. The roller B first has the pendulummembers C-'C app-lied to the end of the journals 17 and this 65 assemblyis then inserted upwardly through the open bottom of the housing orretaining member A, Thereafter, the bearing block 15 with the wear plate16 thereon is inserted within the space provided therefor in the bottomof the retaining member A, after which* the portions 40 are peened overas previously described, from which it will be seen that all of theparts are then held positively in assembled relation as a complete unitand the device may be shipped and applied as suchwithout danger ofdisarrangement of or tampering with any of the parts. l

' The normal position of the parts is las shown in full lines. Inoperation, assuming that the truck bolster remains: stationary andf 'fthe body bolster moves to the left as indicated in ldotted lines inFigurel, the roller will be shifted to the position shown by dottedlines.

As the roller B is shifted, it is evident 85 that there must necessarilyhea simultaneous shifting of the pendulums C dueto the fact that thelatter are carried on the roller journals 17. Inasmuch as the pendulumsC have their guide lugs 19 operatingk in the vertical 90 recesses 14,said pendulums cannot therefore?? maintain their normal pendantposition, but will necessarily betilted, due to the restrictionplacedupon their movement by said lugs 19 working in the recesses 14. Thiswill 95 result in the pendulums C assuming the dotted line positionshown in Figure 1, wherethey are obviously in a condition of unstableequilibrium. Upon release ofthe actuating pressure, it is evident thatthe 6 vertical movement while the roller is travelpendulum C wouldnormally tend to swing downwardly about the trunnions 17, but areprevented from having such free action due to the lugs 19 being withinthe guide recesses 14. This latter engagement, while permitting thecenters of mass of the pendulums C to fall, at the same time compels thereturn of the upper portions of the pendulums to. :the normal positionsshown by full lines in Figure l, and this in turn obviously insures thereturn of the roller B.

I have herein shown and described what I now consider the preferredmanner of carrying out my invention, but the same is merelyillustrative, and I contemplate all changes and modifications that comewithin the scope of the claims appended hereto.

,I claim: y

l. In an anti-friction bearing, the combination with a housing open atthe top and bottom, said housing being provided with vertical guidewaysopen at the bottom and closed at the top of a roller within said housingprojecting through the top opening thereof, said roller4 havinglaterally projecting trunnions; a support within the housing for theroller along which the salne is movable,

said support being detachable from the housing and closing the bottomopening'thereof,

said roller being insertible through the open bottom of the housing; andmeans for holding said roller assembled with the housing and forcentering the roller,including a pair of counter weights, said counterweights having bearing openings receiving the trunnions of the rollerand lugs engaging with the guides Y of the housing, said counter weightsbeing insertible through the open bottom of the housing and the lugsthereof being held against removal from the housing by engagement withthe closed ends of the guideways.

2. In an anti-friction bearing for railway cars including body and truckbolsters, thek combination with a housing having opposed.

side walls, said housing being disposed between the body and truckbolsters and mounted on one of said bolsters; of a supthereof, the sidewalls of the housing having vertical guideways in which the guideprojection of the counterweights are guided for

